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Generate a random alphanumeric string in Cocoa
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Here's a quick and dirty implementation. Hasn't been tested.
NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-(NSString *) randomStringWithLength: (int) len {
NSMutableString *randomString = [NSMutableString string...
Redirect From Action Filter Attribute
What is the best way to do a redirect in an ActionFilterAttribute . I have an ActionFilterAttribute called IsAuthenticatedAttributeFilter and that checked the value of a session variable. If the variable is false, I want the application to redirect to the login page. I would prefer to redire...
Disable submit button when form invalid with AngularJS
...ading this great post of yours: benlesh.com/2012/11/angular-js-form-validation.html
– Ben
May 15 '14 at 17:48
what if ...
iPhone : How to detect the end of slider drag?
...alueChanged event only when the user stops moving the slider.
Swift 5 version:
mySlider.isContinuous = false
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How can I convert a stack trace to a string?
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One can use the following method to convert an Exception stack trace to String. This class is available in Apache commons-lang which is most common dependent library with many popular open sources
org.apache.commons.lang.exception.ExceptionUtils.getStackTrace(Throwable)
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Best way to change the background color for an NSView
...s with a partially- (or fully-)transparent color, use NSRectFillUsingOperation developer.apple.com/mac/library/documentation/Cocoa/Reference/… with the NSCompositeSourceOver operation.
– Peter Hosey
Jun 3 '10 at 6:01
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Converting stream of int's to char's in java
...t. He is using Reader's read method: java.sun.com/j2se/1.4.2/docs/api/java/io/Reader.html#read() The question he is asking is how to convert value returned by this method into char.
– Vanuan
May 7 '09 at 21:43
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Working with README.md on github.com [closed]
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The markup in question is coincidentally called Markdown, created by John Gruber, author of the Daring Fireball blog. The original source of Markdown can be found at Daring Fireball - Markdown.
There are many Markdown dialects, the document...
Best way to convert strings to symbols in hash
... you can use:
my_hash.transform_keys(&:to_sym)
Using older Ruby version? Here is a one-liner that will copy the hash into a new one with the keys symbolized:
my_hash = my_hash.inject({}){|memo,(k,v)| memo[k.to_sym] = v; memo}
With Rails you can use:
my_hash.symbolize_keys
my_hash.deep_sym...
How to check if an NSDictionary or NSMutableDictionary contains a key?
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That's not possible. You can't add nil to a NSDictionary. You would have to use [NSNull null] instead.
– Ole Begemann
May 6 '10 at 21:39
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